476 On the Groictli of Barley hy different Manures, ^-c. 



It not unfrequently happens, too, that some passing abnormal 

 conditions, may affect the crop more strikingly than from the 

 registry of characters for a period would be traceable — unless 

 with the aid of coincident careful observation, and consideration 

 of the stage of progress and tendencies of growth at the time, ol 

 the crop itself. 



Still some broad features of climatic influence may usefully be 

 indicated in connexion with the very different amounts and cha- 

 racter of produce obtained under equal supplied conditions in 

 the several seasons. To make these more intelligible, it will be 

 well to bring to one view from the Tables, some few statements 

 f)f quantity and quality of produce, illustrative of the effects on 

 the crop of the different seasons. This is done in the short 

 Summary Table, No. X., which follows. Perhaps upon the 

 whole, the produce obtained year after year by a pretty complete 

 purelv mineral manure, is open to as little exception, taken as a 

 measure or representative of the intrinsic influence of season 

 upon the crop, as that under any other individual condition ol 

 manuring which our series includes. Accordingly the results of 

 the Mixed Mineral Manure, No. VI., are selected for this pur- 

 pose ; and in the Summary Table (No. X.), is given each of our 

 enumerated cliaracters of quantify and quality of the produce 

 by the manure in question, in each of the six years of the 

 experiments. 



Tablk X. 



Showing the Quality and Quantity of the produce of Barlky, liy a full 

 purely Minekal Manurh, in each of tlie six Seasons. 



The examination of this Table will show the actual and com- 

 parative influence of the respective seasons, upon the seven 

 difterent characters of the produce recorded. It is seen at a 

 glance, that no one season carries with it high condition on every 



